
#include <cassert>
#include <functional>
#include <iostream>
#include <string>
using namespace std;

int main() {
  string a{"hello"}, b{"hello2"};
  size_t val;
  hash<string> hash_str;
  val = hash_str(a);
  cout << val << endl;
  val = hash_str(b);
  cout << val << endl;

  
  return 0;
}